CN115488555A - Be used for compression car weld gap adjustment instrument - Google Patents
Be used for compression car weld gap adjustment instrument Download PDFInfo
- Publication number
- CN115488555A CN115488555A CN202211265022.1A CN202211265022A CN115488555A CN 115488555 A CN115488555 A CN 115488555A CN 202211265022 A CN202211265022 A CN 202211265022A CN 115488555 A CN115488555 A CN 115488555A
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- pin
- lifting
- lifting rod
- supporting
- tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/56—Reuse, recycling or recovery technologies of vehicles
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention relates to the technical field of weld gap adjustment, in particular to a welding gap adjustment tool for a compression vehicle, which comprises a supporting and fixing mechanism, wherein the supporting and fixing mechanism comprises a knurled head screw and a seat body, the seat body is wrapped by a base body, an ear hanging seat, a nut, a side frame and side hanging ears, the nut, the side frame and the side hanging ears are fixedly arranged on the base body through welding, the knurled head screw is arranged on the nut, and the knurled head screw is pressed and fixed during use to tightly press the seat body onto a guide rail formed on a box body; the knurling head screw is installed on the nut, and when in use, the knurling head screw is pressed and fixed to tightly press the base body onto the product guide rail, a pressing mechanism and a lifting mechanism for adjusting the gap between the base plate of the box body and the base plate are arranged on the base body, the pressing mechanism comprises a supporting plate, a pressing rod, an eccentric wheel, a main shaft transverse pin, a vertical pin and a positioning pin, and the pressing rod rotates around the main shaft transverse pin to drive the eccentric wheel to tightly press the base body, so that the lower end of the pressing rod tightly presses the side plate.
Description
Technical Field
The invention relates to the technical field of weld gap adjustment, in particular to a welding gap adjusting tool for a compression vehicle.
Background
When the side plate of the box body of the environmental sanitation compression type garbage truck is welded with the bottom plate, the side plate and the bottom plate are large in fit clearance due to the fact that the bottom plate is wavy and the bending edge of the side plate is deformed. If not control the clearance, the welding is difficult, and is easy because of the clearance is big, leads to the welding seam quality poor and box seepage sewage risk. For guaranteeing that curb plate and bottom plate gap do not exist, in the welding process now, mainly through the spot welding wane, press through the wane and draw side bottom plate.
Because each supporting point and each lifting point of the wane are required to be fixed, the side plates and the bottom plate of the box body are tilted or pressed. After the product is welded, each supporting point needs to be polished and welding points need to be lifted. Because of the auxiliary warping plate, the supporting point can not be welded too firmly, so the welding is easy to be detached in the using process and needs to be fixed again. Therefore, the production efficiency is low, the produced products have poor consistency, and the difficult problems of improving the production efficiency and the product quality are always solved.
Accordingly, a tool for adjusting a weld gap of a compression car has been proposed to address the above problems.
Disclosure of Invention
The invention aims to provide a welding gap adjusting tool for a compression vehicle, which aims to solve the problem that each supporting point and a lifting welding point are required to be polished after the welding of a product is finished. Because of the auxiliary warping plate, the supporting point can not be welded too firmly, so the welding is easy to be detached in the using process and needs to be fixed again. Therefore, the production efficiency is low, the produced products have poor consistency, and the difficult problems of improving the production efficiency and the product quality are always solved.
In order to achieve the purpose, the invention provides the following technical scheme: a welding gap adjusting tool for a compression vehicle,
as an alternative to the present invention, a tool for adjusting a welding gap of a compression car, wherein: a welding gap adjusting tool for a compression vehicle comprises a supporting and fixing mechanism, wherein the supporting and fixing mechanism comprises a knurled head screw and a seat body, the seat body is wrapped by a base body, an ear hanging seat, a nut, a side frame and a side hanging ear, and the nut, the side frame and the side hanging ear are fixedly arranged on the base body through welding;
the knurled head screw is arranged on the nut, and is tightened and fixed when in use, so that the seat body is pressed onto a guide rail formed on the box body; the knurling head screw is installed on the nut, and the seat body is pressed and fastened to the product guide rail when in use.
And the seat body is provided with a pressing mechanism and a lifting mechanism for adjusting the gap between the box body bottom plate and the bottom plate.
As an alternative to the present invention, a tool for adjusting a welding gap of a compression car, wherein: the pressing mechanism comprises a supporting plate, a pressing rod, an eccentric wheel, a main shaft cross pin, a vertical pin and a positioning pin, and the eccentric wheel is driven to be pressed on the seat body by the rotation of the pressing rod around the main shaft cross pin, so that the lower end of the pressing rod presses the side plate.
As an alternative to the present invention, a tool for adjusting a welding gap of a compression car, wherein: the main shaft cross pin is fixed to a side hanging lug of the seat body through a vertical pin, the pressure rod is installed on the main shaft cross pin and can rotate around the upper main shaft cross pin, and the eccentric wheel is installed on the pressure rod in a positioning mode through a bolt and a positioning pin.
As an alternative to the present invention, a tool for adjusting a welding gap of a compression car, wherein: the lifting mechanism comprises a lifting rod, a lifting rod side pin, a foot support, a lifting rod and a lifting rod pin, and the lifting rod and the foot support are driven to move upwards by the lifting rod around the lifting rod pin.
As an alternative to the invention, a tool for adjusting the weld gap of a compression carriage, wherein: the lifting rod is fixed on the side hanging lug of the seat body through a lifting rod pin.
As an alternative to the present invention, a tool for adjusting a welding gap of a compression car, wherein: the pressure bar is formed by welding a pressure block, a connecting plate and a pressure bar handle, wherein the pressure block mainly plays a role of pressing, the connecting plate is connected with the spindle transverse pin to play a supporting role, and the pressure bar handle plays a lever role in bearing force.
As an alternative to the invention, a tool for adjusting the weld gap of a compression carriage, wherein: the lifting rod is formed by welding a lifting block and a lifting rod handle. Wherein the lifting block plays a role in lifting and supporting, and the lifting lever handle is stressed to play a lever role.
Compared with the prior art, the invention has the beneficial effects that:
1. the welding gap adjusting tool for the compression vehicle can conveniently adjust the welding gap through the pressing mechanism and the lifting mechanism, ensures the sealing property of the bottom end of the box body, is simple in structure and convenient to use, avoids the problem that each supporting point needs to be fixed by points, the fixing strength is difficult to control, and the welding cannot be knocked off due to the fact that the welding is too firm or the desoldering is difficult or the welding is too firm, improves the production efficiency, reduces the labor intensity and improves the product quality.
2. This a be used for compression car weld gap adjustment instrument, if need compress tightly to adjust the clearance between bottom plate and the curb plate, can directly rotate the depression bar and rotate around the main shaft horizontal pin, drive the eccentric wheel and compress tightly on the pedestal to make depression bar lower extreme briquetting compress tightly curb plate and bottom plate, make curb plate and bottom plate laminating back, point solid curb plate and bottom plate.
3. According to the welding gap adjusting tool for the compression vehicle, if the gap needs to be adjusted by lifting, the supporting legs and the bottom plate need to be spot-welded on one side, and the lifting rods and the supporting legs 11 are driven to move upwards by the lifting rods around the lifting rod pins; the bottom plate is driven to be attached to the side plate, the side plate and the bottom plate are fixed in a point mode, and the supporting legs are knocked by an iron hammer to be separated from the bottom plate.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the mounting structure at the hold-down structure of the present invention;
FIG. 3 is a schematic view of the mounting arrangement at the lifting mechanism of the present invention;
FIG. 4 is a schematic view of the seat mounting structure of the present invention;
FIG. 5 is a schematic view of the mounting structure of the compression bar of the present invention;
FIG. 6 is a schematic view of the mounting structure of the lifting rod structure of the present invention;
fig. 7 is a schematic view of the mounting structure of the handle bar structure of the present invention.
In the figure: 1. a knurled head screw; 2. a base body; 201. a substrate; 202. an ear hanging seat; 203. a nut; 204. a side frame; 205. side hangers; 3. a support plate; 4. a pressure lever; 401. briquetting; 402. a connecting plate; 403. a pressure lever handle; 5. an eccentric wheel; 6. a main shaft transverse pin; 7. a vertical pin; 8. positioning pins; 9. lifting a rod; 10. a lifting rod side pin; 11. a foot support; 12. lifting a pull rod; 1201. lifting the block; 1202. lifting a lever handle; 13. a lift pin;
a. a box body guide rail.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
Referring to fig. 1 and 4, the present invention provides a technical solution:
a is used for the compression car to weld the interval adjustment tool, a is used for the compression car to weld the interval adjustment tool, the tool includes supporting the fixing mechanism, the above-mentioned supporting the fixing mechanism and containing the knurled head screw 1 and base frame 2, the above-mentioned base frame 2 is chartered and packed and has basal body 201, hangers seat 202, nut 203, side frame 204, side hangers 205, the above-mentioned nut 203, side frame 204, side hangers 205 are fixed to basal body 201 through welding;
the knurled head screw 1 is arranged on the nut 203, and is pressed and fixed when in use, so that the seat body 2 is pressed onto a guide rail formed on the box body;
the base body 2 is provided with a pressing mechanism and a lifting mechanism for adjusting the gap between the bottom plate of the box body and the bottom plate.
Under the arrangement, the invention comprises three steps when in use;
1. the welding clearance adjustment tool supports fixedly, when spot welding bottom plate and curb plate, presses the pedestal 2 of adjustment tool on the compression car box guide rail through knurling head screw 1 earlier, nevertheless the tension that need not lock ensures that pedestal 2 can slide along the box guide rail, adjusts to the great point in each clearance.
2. Judging the large clearance between the side plate and the bottom plate: judging whether the gap between the bottom plate and the side plate is caused by the deformation of the bottom plate bulge or the side plate bulge or the deformation of the bottom plate depression or the side plate depression, thereby determining whether to use a pressing mechanism or a lifting mechanism of an adjusting tool; the pressing mechanism is used when the bottom plate is raised or the side plate is raised and deformed, and the lifting mechanism is used when the bottom plate is sunken or the side plate is sunken and deformed.
3. And (4) disassembling, and after all the clearance adjustment points are fixed, loosening the knurled head screw 1 to separate the base body 2 from the box body guide rail.
Example 2
In this embodiment, referring to fig. 2 and 5, the pressing mechanism includes a supporting plate 3, a pressing rod 4, an eccentric wheel 5, a main shaft horizontal pin 6, a vertical pin 7, and a positioning pin 8, and the pressing rod 4 rotates around the main shaft horizontal pin 6 to drive the eccentric wheel 5 to press against the seat body 2, so that the lower end of the pressing rod 4 presses against the side plate.
As an alternative to the above described welding gap adjustment tool for a compression carriage of the present invention, wherein: the main shaft cross pin 6 is fixed on the side hanging lug 205 of the seat body 2 through a vertical pin 7, the pressure lever 4 is installed on the main shaft cross pin 6 and can rotate around the upper main shaft cross pin 6, and the eccentric wheel 5 is installed on the pressure lever 4 in a positioning mode through a bolt and a positioning pin 8.
Under the above arrangement, if the gap between the bottom plate and the side plate needs to be adjusted by pressing, the pressing rod 4 can be directly rotated to rotate around the main shaft cross pin 6, so as to drive the eccentric wheel 5 to press on the seat body 2, thereby pressing the pressing block 401 at the lower end of the pressing rod 4 to press the side plate and the bottom plate, and after the side plate and the bottom plate are attached, the side plate and the bottom plate are point-fixed.
As an alternative to the above-described one for a compression car weld gap adjustment tool of the present invention, wherein: the lifting mechanism comprises a lifting rod 9, a lifting rod side pin 10, a foot support 11, a lifting rod 12 and a lifting rod pin 13, and the lifting rod 9 and the foot support 11 are driven to move upwards by the lifting rod 12 around the lifting rod pin 13.
As an alternative to the above-described one for a compression car weld gap adjustment tool of the present invention, wherein: the lifting rod 12 is fixed on the side hanging lug 205 of the seat body 2 through a lifting rod pin 13.
Under the arrangement, if the clearance needs to be adjusted by lifting, the supporting leg 11 and the bottom plate need to be spot-welded on one side, and the lifting rod 12 is wound around the lifting rod pin 13 to drive the lifting rod 9 and the supporting leg 11 to move upwards; the bottom plate is driven to be attached to the side plate, the side plate and the bottom plate are fixed in a point mode, and an iron hammer is used for knocking the supporting legs 11 to be separated from the bottom plate.
As an alternative to the above-described one for a compression car weld gap adjustment tool of the present invention, wherein: the pressure lever 4 is formed by welding a pressure block 401, a connecting plate 402 and a pressure lever handle 403, wherein the pressure block 401 is pressed when mainly acting, the connecting plate 402 is connected with the spindle transverse pin 6 to play a supporting role, the pressure lever handle 403 is stressed to play a lever role, and the pressure lever handle 403 is stressed to play a lever role.
As an alternative to the above described welding gap adjustment tool for a compression carriage of the present invention, wherein: the lifting rod 12 is formed by welding a lifting block 1201 and a lifting rod handle 1202. Wherein the lifting block 1201 plays a role in lifting and supporting, and the lifting lever 1202 plays a role in leverage under the stress.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a be used for compression car weld gap adjustment instrument which characterized in that: the tool comprises a supporting and fixing mechanism, wherein the supporting and fixing mechanism comprises a knurled head screw (1) and a base body (2), the base body (2) is wrapped by a base body (201), a lug seat (202), a nut (203), a side frame (204) and a side lug (205), and the nut (203), the side frame (204) and the side lug (205) are fixedly arranged on the base body (201) through welding;
the knurled head screw (1) is arranged on the nut (203), and is pressed and fixed when in use, so that the seat body (2) is pressed onto a guide rail formed on the box body;
and the seat body (2) is provided with a pressing mechanism and a lifting mechanism which are used for adjusting the gap between the bottom plate of the box body and the bottom plate.
2. The tool for adjusting the weld gap of a compression car as set forth in claim 1, wherein: the pressing mechanism comprises a supporting plate (3), a pressing rod (4), an eccentric wheel (5), a main shaft cross pin (6), a vertical pin (7) and a positioning pin (8), and the pressing rod (4) rotates around the main shaft cross pin (6) to drive the eccentric wheel (5) to be pressed on the seat body (2), so that the lower end of the pressing rod (4) is pressed on the side plate.
3. The tool for adjusting the weld gap of a compression car as set forth in claim 2, wherein: the main shaft cross pin (6) is fixed to a side hanging lug (205) of the seat body (2) through a vertical pin (7), the pressing rod (4) is installed on the main shaft cross pin (6) and can rotate around the upper main shaft cross pin (6), and the eccentric wheel (5) is installed on the pressing rod (4) through a bolt and a positioning pin (8) in a positioning mode.
4. The tool for adjusting the weld gap of a compression vehicle as set forth in claim 1, wherein: the lifting mechanism comprises a lifting rod (9), a lifting rod side pin (10), a foot support (11), a lifting rod (12) and a lifting rod pin (13), and the lifting rod (12) drives the lifting rod (9) and the foot support (11) to move upwards around the lifting rod pin (13).
5. The tool for adjusting the weld gap of a compression car as set forth in claim 4, wherein: the lifting rod (12) is fixed on the side hanging lug (205) of the seat body (2) through a lifting rod pin (13).
6. A weld gap adjustment tool for a compression car according to claim 2 or 3, wherein: the pressure lever (4) is formed by welding a pressure block (401), a connecting plate (402) and a pressure lever handle (403), the pressure block (401) mainly plays a role in compressing, the connecting plate (402) is connected with the spindle transverse pin (6) to play a supporting role, and the pressure lever handle (403) plays a lever role in bearing.
7. A weld gap adjustment tool for a compression car according to claim 4 or 5, wherein: the lifting rod (12) is formed by welding a lifting block (1201) and a lifting rod handle (1202). The lifting block (1201) plays a role in lifting and supporting, and the lifting lever handle (1202) plays a role in leverage under stress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211265022.1A CN115488555B (en) | 2022-10-14 | 2022-10-14 | Welding gap adjusting tool for compression vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211265022.1A CN115488555B (en) | 2022-10-14 | 2022-10-14 | Welding gap adjusting tool for compression vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115488555A true CN115488555A (en) | 2022-12-20 |
| CN115488555B CN115488555B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211265022.1A Active CN115488555B (en) | 2022-10-14 | 2022-10-14 | Welding gap adjusting tool for compression vehicle |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB436497A (en) * | 1934-03-27 | 1935-10-11 | Gas Accumulator Company United | Improvements in or relating to apparatus for use when welding |
| GB955476A (en) * | 1960-08-05 | 1964-04-15 | Vokes Bergen Genspring Ltd | Supports for portable tools and the like |
| US6128943A (en) * | 1998-05-21 | 2000-10-10 | Lemmens; Joseph R. | Adjustment mechanism for hand tools |
| CN101648344A (en) * | 2008-08-15 | 2010-02-17 | 天润曲轴股份有限公司 | Eccentric wheel clamping device |
| JP2010207829A (en) * | 2009-03-06 | 2010-09-24 | Nissan Motor Co Ltd | Apparatus and method for holding plate material, and system and method of laser beam welding |
| CN203282100U (en) * | 2013-05-06 | 2013-11-13 | 湖北弘毅建筑装饰工程有限公司 | Press-cake-row type pressing deice used for steel plate butt joint closing machining |
| CN107378356A (en) * | 2017-09-04 | 2017-11-24 | 东风(武汉)实业有限公司 | The welding tool setup of Triangular Arm reinforcing plate |
| CN110614469A (en) * | 2018-06-20 | 2019-12-27 | 宁波方太厨具有限公司 | Welding seam clearance adjustable stainless steel curb plate welding jig |
| CN110842455A (en) * | 2019-12-24 | 2020-02-28 | 无锡透平叶片有限公司 | Universal assembling device for spot welding of hollow blades |
| CN211248768U (en) * | 2019-08-15 | 2020-08-14 | 青岛四方庞巴迪铁路运输设备有限公司 | Auxiliary welding tool for underframe frame |
| CN111531387A (en) * | 2020-06-10 | 2020-08-14 | 哈尔滨新科锐工艺装备制造有限公司 | Composite material part gluing and riveting tool for aviation and manufacturing method |
| CN211915824U (en) * | 2020-03-13 | 2020-11-13 | 华中科技大学 | Floating pressing tool fixture for scanning laser welding of white body bottom plate galvanometer |
| WO2020244125A1 (en) * | 2019-06-03 | 2020-12-10 | 南京英尼格玛工业自动化技术有限公司 | Clamping apparatus for automatic welding of bumper |
| CN213105314U (en) * | 2020-09-02 | 2021-05-04 | 天津福臻工业装备有限公司 | Car body and side wall assembly pre-installation hasp mechanism under white car body |
-
2022
- 2022-10-14 CN CN202211265022.1A patent/CN115488555B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB436497A (en) * | 1934-03-27 | 1935-10-11 | Gas Accumulator Company United | Improvements in or relating to apparatus for use when welding |
| GB955476A (en) * | 1960-08-05 | 1964-04-15 | Vokes Bergen Genspring Ltd | Supports for portable tools and the like |
| US6128943A (en) * | 1998-05-21 | 2000-10-10 | Lemmens; Joseph R. | Adjustment mechanism for hand tools |
| CN101648344A (en) * | 2008-08-15 | 2010-02-17 | 天润曲轴股份有限公司 | Eccentric wheel clamping device |
| JP2010207829A (en) * | 2009-03-06 | 2010-09-24 | Nissan Motor Co Ltd | Apparatus and method for holding plate material, and system and method of laser beam welding |
| CN203282100U (en) * | 2013-05-06 | 2013-11-13 | 湖北弘毅建筑装饰工程有限公司 | Press-cake-row type pressing deice used for steel plate butt joint closing machining |
| CN107378356A (en) * | 2017-09-04 | 2017-11-24 | 东风(武汉)实业有限公司 | The welding tool setup of Triangular Arm reinforcing plate |
| CN110614469A (en) * | 2018-06-20 | 2019-12-27 | 宁波方太厨具有限公司 | Welding seam clearance adjustable stainless steel curb plate welding jig |
| WO2020244125A1 (en) * | 2019-06-03 | 2020-12-10 | 南京英尼格玛工业自动化技术有限公司 | Clamping apparatus for automatic welding of bumper |
| CN211248768U (en) * | 2019-08-15 | 2020-08-14 | 青岛四方庞巴迪铁路运输设备有限公司 | Auxiliary welding tool for underframe frame |
| CN110842455A (en) * | 2019-12-24 | 2020-02-28 | 无锡透平叶片有限公司 | Universal assembling device for spot welding of hollow blades |
| CN211915824U (en) * | 2020-03-13 | 2020-11-13 | 华中科技大学 | Floating pressing tool fixture for scanning laser welding of white body bottom plate galvanometer |
| CN111531387A (en) * | 2020-06-10 | 2020-08-14 | 哈尔滨新科锐工艺装备制造有限公司 | Composite material part gluing and riveting tool for aviation and manufacturing method |
| CN213105314U (en) * | 2020-09-02 | 2021-05-04 | 天津福臻工业装备有限公司 | Car body and side wall assembly pre-installation hasp mechanism under white car body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115488555B (en) | 2023-05-23 |
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